[ros-users] [Discourse.ros.org] [General] ROS2 vs ROS1 ? Or more like ROS2 + ROS1?

[Dirk Thomas]

The following statement in the article is unfortunately misleading:

> Catkin has been replaced by colcon ...

Since the article itself doesn't offer to provide comments I want to point future readers here to [this design doc](http://design.ros2.org/articles/build_tool.html) which describes the difference between the *build systems* (e.g. `CMake`, the CMake API of `catkin`, `ament_cmake`) and the *build tools* (`catkin_make`, `catkin_make_isolated`, `catkin_tools`, `colcon`).





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